nodejs update ubuntu 18 code example

Example 1: ubuntu 18 install nodejs

cd ~
curl -sL https://deb.nodesource.com/setup_12.x -o nodesource_setup.sh
sudo bash nodesource_setup.sh
sudo apt install nodejs
nodejs -v # shows your version

Example 2: update node js version ubuntu

sudo npm cache clean -f
sudo npm install -g n
sudo n stable